Coupling for connecting a series of tubes



(N0 ModeL) H.'BUSHNELL 7v COUPLING-FOR CONNECTING A SERIES OF TUBES. 7 No. 355,137. Patented Dec. 28,' 1'886 Fig.1

WITNESSES: INVENTOR a} DEW.

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ATTORNEY N. PETERS Pholn-Lllhogliphen Wn'lhingkm, D. C.

: NITED STATES PATENT Fries.

HENRY BUSHNELL, OF NEW HAVEN, CONNECTICUT.

COUPLING FOR CONNECTING A SERIES OF TUBES.

SPECIFICATION forming part of Letters Patent No. 355,137, dated December 28, 1886.

Application filed April 6, 1886.

T aZZ whom it may concern:

Be it known that I, HENRY BUSHNELL, a resident of New Haven, Connecticut, have invented new and useful Improvements in Couplings for Connecting a Series of Tubes, of

, fully described and claimed.

In the accompanying drawings, Figure 1 is a view of a pair. of reservoir-tnbesconnected by my improved coupling. Fig. '2 is a central section through one of the tubes. Fig. 8 is an end View of a tube. Fig. 4 is an end view of the coupling-bolt, and Fig. 5is an end view of a tube with the bolt shown in' section through the plane of the tube-head.

Referring to the drawings, A designates a series of hollow tubes or reservoirs arranged side by side in a cluster, and coupled together at one. end by connecting-pipes and circular chambers 8, formed integral coincident with the tubes. The chambers are fitted against the endsof the tubes and are faced off on the opposite side to receive suitable caps or covers, t. 'A rectangular opening, 8, is made through the end of each reservoir-tube coincident with the center of the chamber 8. A bolt, u, is arranged centrally in each chamber through the rectangular opening, with its head on the inside of the tube and its threaded end screwed into the cap it, thus holding the caps, couplings, and tubes securely together. The head of the bolt is made of the same shape as the opening in the tube, and just large enough to pass throughit. The bolt-head is entered Serial No. 198,014. (No model.)

' through the orifice and then turned at right angles therewith, in which position the ends of the heads bear upon and hold on the inside of the tube.

The-bolt is formed with a neck under its head, of the shape shown, having opposite square corners which bear on the sides of the orifice when the head of the bolt is at right angles therewith, and preventthe bolt from being turned pastthat position. This con struction is necessary to hold the bolts stationary and prevent them from turning while the caps are'being screwed upon them. The caps clamp the connecting pipe or shell 8 against the tubes, and suitable packing may be interposed between the caps, casing, and tubes, if desired. The orifices s afford free communication between the tubes and the connecting-pipe s, which may be extended to connect any required number of tubes.

This coupling is easily attached to or refices in the heads and turned at right angles thereto, and the caps t, seated in the outer face of the connecting parts and screwed upon the T-headed bolts, all combined substantially in the manner and for the purpose specified.

' HENRY BUSHNELL. Witnesses:

GEORGE L. BARNES, WM. J. Roor. 

